The second part of the talk Multigrid and multilevel methods, by Ivana Pultarová (Faculty of Civil Engineering, Czech Technical University in Prague) will be held on Monday January 9, 2017 at 9:00 in room K3.

Abstract:

Iterative numerical methods for solution of differential equations usually suffer from slow convergence when the discretized problem is large. Changing both the basis of the discrete space and the algorithm may help to reduce all components of the error with a similar rate. We provide a short overview of four multigrid and multilevel approaches: hierarchical basis method, Bramble-Pasciak-Xu method, multigrid and algebraic multilevel methods, and compare their basic characteristics and convergence conditions.